private async void DoTrackStart()
{
await Task.Delay(100).ConfigureAwait(false);
if (partPlayStart != TimeSpan.Zero)
{
//await Task.Delay(100);
// PlayerStoryboard.BeginTime = MarkerStoryboard.BeginTime = partPlayStart;
if (PlayPartLength > 0)
{
var end = (TimeSpan.FromMilliseconds(PlayPartLength + partPlayStart.TotalMilliseconds));
endAnimationTime = end;
// PlayerStoryboard.Duration = MarkerStoryboard.Duration = (TimeSpan.FromMilliseconds(PlayPartLength + partPlayStart.TotalMilliseconds));
//PlayerStoryboard.SpeedRatio = 0.5;
// playTimer = new System.Threading.Timer(doTrackPartEnd, partPlayStart, (int)PlayPartLength, Timeout.Infinite);
}
else
{
endAnimationTime = null;
partPlayStart = TimeSpan.Zero;
}
PlayerStoryboard.Resume(mediaElement);
MarkerStoryboard.Resume(PositionBar);
}
else
{
PlayerStoryboard.Begin(mediaElement, true);
MarkerStoryboard.Begin(PositionBar, true);
}
}
private void DoPlayTextPart(TextPart tp)
{
PlayerStoryboard.Stop(mediaElement);
MarkerStoryboard.Stop(PositionBar);
PlayPartLength = tp.TextWidth; // 1px = 1 mill
var scaledStartMills = tp.StartMills;
var seekTime = TimeSpan.FromMilliseconds(scaledStartMills);
MarkerRectangle.Margin = new Thickness(scaledStartMills * Scale, 0, 0, 0);
MarkerRectangle.Width = PlayPartLength * Scale;
SeekToMousePointInTime(seekTime);
TrackStartCommand.Execute(null);
}
internal void SeekToMousePointInTime(TimeSpan seekTime)
{
if (seekTime.Ticks < 0)
{
seekTime = TimeSpan.FromTicks(1);
}
partPlayStart = seekTime;
MarkerStoryboard.Begin(PositionBar, true); // if the second parameter is missing or false, it doesn't work
MarkerStoryboard.Seek(PositionBar, seekTime, TimeSeekOrigin.BeginTime);
MarkerStoryboard.Pause(PositionBar); // stop doesn't work
PlayerStoryboard.Begin(mediaElement, true); // if the second parameter is missing or false, it doesn't work
PlayerStoryboard.Seek(mediaElement, seekTime, TimeSeekOrigin.BeginTime);
PlayerStoryboard.Pause(mediaElement); // stop doesn't work
}
private void MarkerStoryboard_CurrentTimeInvalidated(object sender, EventArgs e)
{
if (endAnimationTime == null)
{
return;
}
ClockGroup clockGroup = sender as ClockGroup;
if (clockGroup?.Children.Count > 0)
{
AnimationClock mediaClock = clockGroup.Children[0] as AnimationClock;
if (mediaClock.CurrentProgress.HasValue)
{
if (mediaClock.CurrentTime >= endAnimationTime)
{
MarkerStoryboard.Pause(PositionBar);
}
}
}
}
internal void MarkerStoryboard_Pause()
{
MarkerStoryboard.Pause(PositionBar);
}
internal void MarkerStoryboard_Resume()
{
MarkerStoryboard.Resume(PositionBar);
}
